Automatic air control



u. s; e. HINTON.

AUTOMATIC AIR CONTROL.

APPLICATION FILED MAR-3.1917.

1,330,265. 4 Patented Feb. 10,1920.

UL YSSES GItANT I-IINTON, OF llIO1\l".[1T|IR, EY PARK, CALIFORNIA. 1

AUTOMIQIIG AIR CONTROL.

Specification of Letters Patent.

Application filed March 3, 1917. Serial No. 152,291. Y

To all whom itvmay concern:

Be it known that I, ULYSSES S. GRANT HINTON, a citizen of the UnitedStates, residing at Monterey Park, in the county of Los Angeles, Stateof California, have invented new and useful Improvements in AutomaticAir Control, of which the follow- 'ing is a specification;

This invention relates to gas savers for automobiles and the like; andit is an object of this invention to provide a simple and inexpensivedevice which may be easily applied to a carbureter and which, when applied, has the function of greatly increasing the ,efiiciency of thecarbureter and the engine to which it is attached.

It is further an object of this invention to provide a device which,when applied to a carbureter, will always be uniform in action and willnot be affected in action by variations in the sizeof the parts in whichit is placed. For instance, in some gas savers, the application of thesaver to the carbureter is liable to change the interrelation of theparts of the gas saver, so that the gas saver does not act in a normaland uniform manner; and it is a specific objectof my invention toovercome this difliculty.

It is also an object of my invention to pro-- vide, in such a simpledevice as herein described, a means for taking care of back firesthrough the carbureter. This I do in a very simple manner, ashereinafter specified.

In the following specifications, I describe a preferred and specificform of device embodying my invention; and reference is had for thispurpose to the accompanying drawings in which Figure 1 is a sideelevation of a carbureter, showing my gas saver in operative position,certain parts being shown in section; Fig. 2 is an enlarged longitudinalsection of mygas saver; Fig. 3 is an end view thereof taken as indicatedby line 8-3 on Fig. 2; and Fig. 4 is a section taken as indicated byline 4.4 on-Fig. 2. v

In the drawings the numeral 10 designates any ordinary carbureter havingits air intake at 11, which maybe controlled by air throttle 12. In onecommon form of carbureter this air intake may be provided with a tube13, which extends outwardly and upwardly,having a part 14 at its upperend 7 adapted to be clamped against the exhaust manifold of the engine,for the purpose of heating the air entering the carburetef. I

Patented 1360.10, 19.20.

make my gas saver 15 to fit .into the inner end of this tube 13. My gassaver comprises a cylindrical shell 16 with a prefer-- ably conicalenlargement 16? on one end.

This enlargement is of. such dimensions as to cause the shellto befittedtightlyiand snugly intoany tube 13, taking'c'are' of any smallvariations in the size of thetu be; and doing this without the necessityof changing the effective diameter of the shell 16. In the other end ofthe shell I mountthe pivoted valve 17. This valve 17 is pivotallymounted upon a suitable transverse plvot pin 18, ears 19 being turnedupon the periphery of the valve to engage the pivot pin 18. Pivot pin 18is s et'in shelll16 by providing indentations in the wall of the shell,as shown at 20, and passing the'pivot pin through apertures in theindented portions.

Valve 17 is preferably made of stamped I sheet metal and issubstantially circular; and has a hook 21 stamped out of itself'andadapted to be engaged by the end of the valve closing spring 22, theother end of the valve closing spring hooked around a small projection23 at the swedged end of the shell. The valve normally stands in theposition shown in the drawings; and its upper edge presses against astop 24 formed by the inwardbending of a small portion of the endof theshell; the spring 22 holding the Valve normallyagainst this stop. Thelower part of the valizefbeing that-part below the pivot pin 18, isbentoutwardly, as shown at 17 in Fig.2, so that this part stands in adiagonal position point- 7 ing diagonally outward toward the directionfrom which the air comes, this direction being indicated by the arrow inFig. 2. Any back fire which occurs comes from the direction of thecarbureter, and impinges upon the valve in the direction oppositeto'that indicated ,on Fig.2. v i v,

It will be noted .that the shell and the valve being both circular,there is a2 definite and uniform open space ;-around thejupper part ofthe valve, between the upperpart of the valve and the shell"; but thebending of the lower part 17 of the valve, to adiago'nal position, makesa somewhat 'wider opening a e s le e rar we engage shell; that is,between the shell and that part of the valve which is below the pivotpin 18. By reference to the drawings, it will be seen that the space at25 is Wider than the space at 26. This widened space, and the diagonalposition of the parts 17*, play an important function; and it will henoted that,

for the purpose of this function, it is important that the relation ofthe valve to the shell be fixed and not be variable. the engine isrunning at low speed, sufiicient air is drawn through the spaces aroundthe valve to supply the engine; when the engine runs at a higher speed,or the throttle is opened to admit more air to the engine, then thevalve is proportionately opened against the action of spring 22; thestrength and tension of this spring being determined and Y set-inaccordance with the requirements of the carbureter and engine. Now, whena back fire occurs, the back rush of gases tends to immediately seek thepath of least resistance to flow; and the stream of outrushing gases isthus directed to the wider opening at 25 under the diagonal part 17*.The effect of this construction and'operation has been shown in practiceto sufliciently relieve J the back pressure.

The moving parts are preferably of light weight, so as to respondquickly, and I find that my gas saver is not only very etficlent inaction, due to the fact of proper proportioning and unchangeablerelation between the shell and the valve; but is also very etfective torelease a back fire, due to the action just described.

. Having described a preferred form of my invention, I claim:

1. A gas saver for a carbureter adapted to be attached to the air intakeof the carbureter; embodying an exterior shell, a valve I. pivotedtransversely across the shell and 7 bearing a certain definite andunchangeable bureter; embodying an exterior shell, a valve 1 pivotedtransversely across the shell and bearinga certain definite andunchangeable relation to the shell, and spring means to normally holdsaid valveclosed. the body of said valve extending substantiallytransversely across the shell, and a part of said valve on-one side ofits pivot, extending di- 4 agonallv outwardly toward the outer end ofthe shell. there being a fixed open space between the body of the valveand the shell, and there being a widerrfixed open space When between thediagonally extending portion of the valve and the shell, whereby backfire pressure is relieved.

3. A gas saver for a carbureter adapted to be attached to the air intakeof the carbureter comprising an attaching member; an exterior shelladapted to be inserted into the attaching member, a valve pivotedtransversely across the shell and bearing a certain definite andunchangeable relation to the shell, and spring means to normally holdsaid valve closed, the shell having means formed at the end adapted toretain the shell in the attaching member subsequent to insertion thereinwithout changing the definite relation of the shell to the valve.

4. A gas saver for a carbureter adapted to be attached to the air intakeof the carbureter; embodying an exterior shell, a valve pivotedtransversely across the shell and 85 hearing a certain definite andunchangeable relation to the shell, and spring means to normally holdsaid valve closed. the body of said valve extending substantiallytransversely across the shell, and a part of said valve on one side ofits pivot, extendingdi agonally outwardly toward the outer end of theshell, there being a fixed open space between the body of the valve andthe shell, and there being a wider fixed open space between thediagonally extending portion of the valve and the shell wherebyback-fire pressure is relieved, the shell having an enlarged end forfitting the shell into the'air intake without changing the definiterelation of the shell to the valve.

5. A gas saver for a carbureter adapted to be attached to the air intakeof the carbureter; embodying an exterior shell. a valve pivotedtransversely across the shell, and

spring means to normally hold said valve in closed positionacross theshell. the body of 7 said valve extending substantially transverselyacross the shell. and having an opening movement inwardly against theaction of saidspring, and a part of said valve on one side of its pivotextending diagonally outwardly toward the outer end of the shell andspaced from the shell, whereby back fire pressure is relieved.

6. A gas saver for a carbureter adapted to be connected to the airintake thereof; embodying an exterior shell. a valve pivotedtransversely across the shell, and spring means to normally hold thevalve infclosed position. the valve lvingon both sides of its pivot andthe pivot being closer to one edge of the valve than to the other. thevalve being shaped so as to leave a larger normall open space betweenthe shell and thatedge of the valve closer to the pivot than between theshell and the other edge of the valve, whereby back fire pressure isrelieved.

7. A as saver for carbureters having an air intake pipe, ashell adaptedto be insert 130 ed in the pipe, a valve pivoted transversely across theshell and bearing in its normal position a certain definite andunchangeable relation to the shell, means normally to hold the valveclosed, and one end of the shell being sonically enlarged to fit intoand hold the shell in air intake pipes of difi'erent sizes Withoutchanging the definite relation of the shell to the valve. 7 V

In Witnessthat I claim the foregoing I 10 have hereunto subscribed myname this 26th day of February, 1917.

U. s. GRANT HINTON.

